KR20200094326A - Method for manufacturing conductive for clothes using environmental preparation process - Google Patents

Abstract

The present invention relates to a conductive yarn for combining a conductive material with a surface of nylon yarn and a manufacturing method thereof and, more specifically, to a conductive yarn for clothing using eco-friendly technology and a manufacturing method capable of strengthening a bonding strength of a conductive material by mixing two or more types of coupling agents in a modification process for surface modification of the nylon yarn; and dramatically reducing an amount of generated wastewater by removing an etching process of etching the surface of the nylon yarn performed before the surface modification. The manufacturing method comprises: a step of removing impurities adhering to the surface by refining nylon material yarn with a refining agent; a step of modifying the surface to strengthen the bonding strength of the conductive material by placing the refined material yarn to a surface modifier; a step of providing conductivity by placing the modified material yarn to a conductivity providing agent including the conductive material and combining the conductive material with the surface; a step of placing conductive yarn wherein the conductive material is combined with the surface to a functional emulsion and emulsifying the same; a step of dehydrating the emulsified conductive yarn; and a step of completing manufacturing of the conductive yarn by drying the dehydrated conductive yarn with hot wind.

Description

Manufacturing method of a conductive yarn for clothing using eco-friendly pretreatment technology{METHOD FOR MANUFACTURING CONDUCTIVE FOR CLOTHES USING ENVIRONMENTAL PREPARATION PROCESS}

The present invention relates to a method for manufacturing a conductive yarn for clothing in which a conductive material is bonded to the surface of a nylon yarn, and more specifically, to improve the bonding force of a conductive material by mixing two or more coupling agents in a modification process for surface modification of a nylon yarn. According to the present invention, it is possible to omit the nicking process of etching the surface of the nylon yarn that is performed before the reforming process, and thus relates to a method of manufacturing a conductive yarn for clothing using eco-friendly technology capable of dramatically reducing wastewater generation.

In general, a conductive yarn is a fiber that imparts conductivity through a conductive material by artificially bonding a conductive material including copper to a surface of a material yarn made of nylon, acrylic, polyester, or the like.

Unlike general synthetic fibers or some natural fibers, these conductive yarns do not generate static electricity even between friction between fibers or between fibers and skin, so antistatic work clothes and antistatic gloves required for semiconductor manufacturing factories, camouflage membranes used for military use, inner clothing and socks, etc. It is used as the material fiber of.

On the other hand, the conductive yarn is a refining process for refining the surface of the material yarn, a nicking process for etching the surface of the refined material yarn, a reforming process for modifying the surface of the etched material yarn, and bonding a conductive material to the surface of the modified material yarn. It is manufactured through a conductive treatment process, an emulsion treatment process for tanning a conductive yarn having a conductive material bound to the surface of a material yarn, and a drying process for dehydrating and drying the treated conductive yarn.

Here, when performing the nicking process, the surface of the material yarn is effectively etched, and the conductive material is diluted with hydrochloric acid (HCL) at a concentration of 35% or 9% so that the conductive material is firmly bound to the surface of the material yarn. As a chemical substance, hydrochloric acid (HCL, chlorine and its compounds) belongs to one of 35 specific atmospheric organic substances that cause transfer and environmental damage according to the'Air Quality Conservation Act' and is strictly regulated in use and emission.

In recent years, as environmental pollution problems including air, water, and soil have been spread and accelerated worldwide, the use of hazardous chemicals such as hydrochloric acid has been strictly regulated. Products are naturally excluded from the market.

Therefore, in order to comply with the regulatory policy of hazardous chemicals and the market exclusion of returned products, the conductive material is firmly attached to the surface of the material yarn without using any hydrochloric acid (HCL) solution that causes harm to the human body and the environment used in the nicking process. It is necessary to research and develop eco-friendly pre-treatment technology that can be combined to manufacture conductive yarns.

Published Republic of Korea Patent Publication No. 10-2013-0099474, 2013.09.06.

The present invention was invented in order to solve the above problems, a hydrochloric acid (HCL) solution that causes harm to the human body and the environment used in the nicking process so as to meet the regulatory policy of hazardous chemicals and market exclusion of returned products. An object of the present invention is to provide a method for manufacturing a conductive yarn for clothing using an environmentally friendly pre-treatment technology manufactured by an environmentally friendly pre-treatment technology capable of manufacturing a conductive yarn by firmly bonding a conductive material to a surface of a material yarn without using at all.

The object of the present invention is not limited to the above-mentioned object, and other objects not mentioned will be clearly understood from the following description.

A method of manufacturing a conductive yarn for clothing using an eco-friendly pre-treatment technology according to the present invention for achieving the above object is a step of refining a nylon material yarn with a refining agent to remove impurities attached to the surface; Modifying the surface so that the binding force of the conductive material is strengthened by introducing the refined material yarn into the surface modifier; Adding the modified material yarn to a conductive additive containing the conductive material to bond the conductive material to a surface to impart conductivity; Performing an emulsion treatment by introducing a conductive yarn in which the conductive material is bound to the surface into a functional emulsion; Dewatering the emulsion-treated conductive yarn; And drying the dehydrated conductive yarn with hot air to complete the production of the conductive yarn. In the step of modifying the surface

The surface modifier is characterized by being formed by dissolving a coupling agent, acetic acid, mercaptoethanol, isopropyl alcohol, urea and ammonium sulfate in water.

The coupling agent is characterized by mixing at least two types of mercaptansilane, aminosilane, and epoxysilane.

The conductive additive is characterized in that it is formed by dissolving copper sulfate, sodium thiosulfate, sodium metabisulfite, sodium phosphate dibasic and citric acid in water.

The present invention according to the above-described configuration is a mixture of at least two coupling agents to modify the surface of the material yarn, heat the material yarn to a constant temperature with warm air, and then activate the surface that naturally cools in the air, thereby affecting the human body and the environment. Despite omitting the nicking process using a hazardous hydrochloric acid (HCL) solution, the conductive material can be firmly bound to the material yarn, so it is a high-quality conductive yarn with excellent durability and conductivity through eco-friendly pre-treatment technology that excludes the use of the hydrochloric acid (HCL) solution. There is an effect that can provide.

1 is a flow chart sequentially showing the steps of a method for manufacturing a conductive yarn for clothing to which an eco-friendly pre-treatment technology is applied according to a preferred embodiment of the present invention.

The present invention relates to a method for manufacturing a conductive yarn for clothing using an eco-friendly pre-treatment technology used for clothing, including work clothes, etc., worn to prevent static electricity in a semiconductor manufacturing factory.

In particular, the method of manufacturing a conductive yarn for clothing to which the environmentally friendly pre-treatment technology according to the present invention is applied is manufactured and provided as an environmentally friendly technique that excludes the use of hazardous chemical substances to comply with the regulation policy of hazardous chemical substances and the market exclusion of returned products. It is characterized by being able to.

This feature omits the nicking process performed after the refining process to remove impurities bound to the material yarn and performs a surface modification process to modify the surface of the material yarn after the refining process, but at least 2 when performing the surface modification process This can be achieved by using a surface modifier mixed with a combination of species coupling agents.

Accordingly, as the nicking process is omitted, the use of a hydrochloric acid (HCL) solution can be excluded to produce an eco-friendly product, and a conductive material is firmly bonded to the material yarn by performing a surface modification process using at least two coupling agents. To ensure durability.

Hereinafter, a method of manufacturing a conductive yarn for clothing to which an eco-friendly pretreatment technology according to a preferred embodiment of the present invention is applied will be described in detail with reference to the accompanying drawings.

A method of manufacturing a conductive yarn for clothing using an eco-friendly pre-treatment technology according to a preferred embodiment of the present invention includes a refining step (S10), a surface modification step (S20), a surface activation step (S30), and a conductive imparting step (as shown in FIG. 1). S40), an emulsion treatment step (S50), a dehydration step (S60) and a drying step (S70).

First, the refining step (S10) is a step of refining a nylon material yarn with a refining agent to remove impurities including oily components and foreign substances bound to the surface of the material yarn.

That is, the material yarn can be refined for 20 to 40 minutes by putting it into a refining agent solution heated to 55 to 65°C. At this time, the refining agent solution may be a composition prepared by dissolving a nonionic surfactant in water as a solvent. In addition, 1 to 2 g/L may be used as the nonionic surfactant.

Next, the surface modification step (S20) is a process of modifying the surface of the material yarn with the surface modifier of the material yarn from which the impurities have been removed in the refining step (S10).

That is, the material yarn is introduced into the surface modifier according to the omission of the nicking process, and the surface of the material yarn is sufficiently modified for 120 to 240 minutes while gradually raising the temperature of the surface modifier from 30° C. to 70 to 90° C. It is a core pre-treatment process so that the bonding strength is strengthened.

At this time, the surface modifier is a coupling agent, a catalyst for accelerating the hydrolysis of the coupling agent, an anti-gelling agent for preventing the gelation of the coupling agent, a bonding agent for increasing the bonding force between the material yarn and the conductive material, and a bonding agent for securing durability and the action of the bonding agent Auxiliary bonding aids and color modifiers dissolved in water as a solvent may be used.

Here, acetic acid may be used as a catalyst. As an anti-gelling agent, mercaptoethanol may be used. As the bonding agent, isopropyl alcohol may be used. Ammonium sulfate may be used as a bonding aid. As a color adjuster, urea may be used, and the surface color of the conductive yarn may be adjusted according to a mixing ratio with ammonium sulfate.

In addition, a silane-based coupling agent including mercaptopropyltrimethoxy silane, aminopropyltrmethxy silane, and epoxysilane (glycidoxypropyltrimethpcy silasn) may be used as the coupling agent.

However, the coupling agent can be used by mixing at least two or more of mercaptansilane, aminosilane, and epoxysilane at the same mixing ratio so as to secure a firm bonding force between the material yarn and the conductive material according to the omission of the nicking process.

At this time, the mixing ratio may vary depending on the combination. When only mercaptansilane and aminosilane are used, they can be mixed at a weight ratio of 1:1 to 1:0.5. When only mercaptansilane and epoxysilane are used, 1:0.5 to It can be mixed at a weight ratio of 1:0.7, and when both aminosilane and epoxysilane are used, it can be mixed at a weight ratio of 1:0.5:0.5.

Next, the surface activation step (S30) is a process of activating the surface modification state of the material yarn whose surface is modified through the surface modification step (S20).

That is, after heating the surface-modified material yarn with a relatively low temperature of 30-40° C., the process of natural cooling in the air can be repeatedly performed at least twice to activate the surface modification state.

Then, the surface of the material yarn is affected by the temperature change due to repeated heating and cooling, and thus the surface modification state of the material yarn is maintained in an activated state, thereby further strengthening the bonding force of the conductive material in the step of imparting conductivity (S40). I can do it.

Next, in the conductive imparting step (S40), the surface is modified and activated through the surface modification step (S20) and the surface activation step (S30), and the activated material is put into a conductive additive containing a conductive material to surface the material yarn. It is a process to impart conductivity by bonding a conductive material to the.

That is, the material yarn may be added to the conductive additive to treat the material at 40 to 70° C. for 200 to 400 minutes to bond the conductive material to the surface of the material yarn. Then, the raw material yarn may have a shape as a conductive yarn in which a conductive material is bonded to the surface.

At this time, the conductive additives are copper sulfate as a conductive material, sodium thiosulfate and sodium metabisulfite as reducing agents, dibasic sodium phosphate as a stabilizer, citric acid as a pH adjusting agent. (citric acid) can be used by dissolving in water as a solvent.

Next, the functional emulsion treatment step (S50) is a process of tanning a conductive yarn having a conductive material bonded to the surface with a functional emulsion through the conductive imparting step (S40).

That is, it is a process for enhancing the durability to prevent the fall of the conductive material at the same time as to impart the properties as a fiber by injecting the conductive yarn into the functional emulsion and treating the conductive yarn to have 0.35 to 1.00% by weight of oil.

At this time, the functional oils may include tactile improvers, water repellents, oil repellents, brushing enhancers, rust inhibitors, softening agents, antistatic agents, coating agents, and antioxidants, and at least one of them may be used to correspond to the use of the conductive agent. You can choose and use.

Then, the conductive yarn may have properties such as maritime, knitting, weaving, tactile, brushed, functional protection, water repellency, oil repellency, and rust resistance depending on the use of the functional emulsion.

Next, the dehydration step (S60) is a process of dehydrating the conductive agent that has been treated through the functional emulsion treatment step (S50) through a dehydrator.

At this time, it can be dehydrated so that the water content of the conductive yarn is 25 to 35%. That is, it is preferable to dehydrate to have the above water content because it deteriorates the properties as a fiber by lowering the retention rate of the oil during excessive dehydration and over-rises the retention rate of the oil during insufficient dehydration, which decreases conductivity and works during the post-treatment process. .

Finally, the drying step (S70) is a process of completing the production of the conductive yarn by hot air drying the conductive yarn dehydrated through the dehydration step (S60).

[Example 1]

50 denier nylon yarn was refined with 2 g/l of nonionic surfactant. And a coupling agent mixed with mercaptansilane and aminosilane in a 1:1 ratio by weight (5 to 30 g/ℓ) of nylon yarn, 1 to 5 g/ℓ of acetic acid, 5 to 15 g/ℓ of mercaptoethanol and 10 to isopropyl alcohol It is a surface modifier made up of a liquid ratio of 1:15 by dissolving 40g/ℓ, urea 10~40g/ℓ and ammonium sulfate 10~30g/ℓ in water, 150 minutes while heating at 30℃ to 80℃ at 10℃ for 30 minutes. During the surface modification, it was thoroughly washed with water. Then, the surface activation process of heating the nylon yarn at 40° C. for 30 minutes and then naturally cooling was performed twice. And after conducting the conductive treatment with a conductive additive comprising a mixture of copper sulfate, sodium thiosulfate, sodium metabisulfite, sodium bibasic sodium phosphate and citric acid, the mixture was washed with water sufficiently. Then, the conductive yarns treated with a conductive agent were treated with a functional emulsion, dehydrated and dried with hot air to complete the production of the conductive yarns.

[Example 2]

The 70 denier nylon yarn was refined with 2 g/L of nonionic surfactant. And the nylon yarn is 5 to 30 g/L of mercaptan silane, 5 to 20 g/L of aminosilane and 5 to 15 g/L of epoxy silane, 1 to 5 g/L of acetic acid and 5 to 15 g/L of mercaptoethanol, 10-40 g/L of isopropyl alcohol, 10-40 g/L of urea, 10-30 g/L of ammonium sulfate, dissolved in water, and a surface modifier formed at a liquid ratio of 1:15. Washed. Then, the surface activation process of heating the nylon yarn at 40° C. for 30 minutes and then naturally cooling was performed twice. Then, the conductive treatment agent was mixed with copper sulfate, sodium thiosulfate, sodium metabisulfite, sodium phosphate dibasic, and citric acid. Then, the conductive yarn treated with the conductor was treated with a functional emulsion, dehydrated, and then dried by hot air to complete the production of the conductive yarn.

[Comparative Example 1]

50 denier nylon yarn was refined with 2 g/l of nonionic surfactant. Then, the nylon yarn was etched at 55°C for 30 minutes with a diluted solution of hydrochloric acid (HCL) at a concentration of 35%, and then washed sufficiently. Then, 5 to 30 g/ℓ of mercaptan silane was used as the coupling agent for nylon yarn, 1 to 5 g/ℓ of acetic acid, 5 to 15 g/ℓ of mercaptoethanol, 10 to 40 g/ℓ of isopropyl alcohol, and 10 to 40 g/ℓ of urea, 10-30 g/L of ammonium sulfate was dissolved in water, and was thoroughly washed with surface modification under the same conditions as in Example 1 with a surface modifier formed at a liquid ratio of 1:15. Then, the copper sulfate, sodium thiosulfate, sodium metabisulfite, sodium phosphate dibasic, and citric acid were mixed with a conductive imparting agent. Then, the conductive yarn with the conductive treatment was treated with a functional emulsion, dehydrated and dried with hot air to complete the production of the conductive yarn.

[Comparative Example 2]

The 70 denier nylon yarn was refined with 2 g/L of nonionic surfactant. Then, the nylon yarn was etched at 55°C for 30 minutes with a diluted solution of hydrochloric acid (HCL) at a concentration of 35%, and then washed sufficiently. Then, 5 to 30 g/ℓ of mercaptan silane was used as the coupling agent for nylon yarn, 1 to 5 g/ℓ of acetic acid, 5 to 15 g/ℓ of mercaptoethanol, 10 to 40 g/ℓ of isopropyl alcohol, and 10 to 40 g/ℓ of urea, 10-30 g/L of ammonium sulfate was dissolved in water, and the surface was modified at a liquid ratio of 1:15, and the surface was modified under the same conditions as in Example 1, followed by washing with water. Then, the conductive additive was mixed with copper sulfate, sodium thiosulfate, sodium metabisulfite, sodium phosphate dibasic, and citric acid, and then sufficiently washed with water. Then, the conductive yarn with the conductive treatment was treated with a functional emulsion, dehydrated and dried with hot air to complete the production of the conductive yarn.

The measurement results of the number of times, metal content, specific resistance, and friction fastness for the conductive yarns manufactured by Examples 1 and 2 and Comparative Examples 1 and 2 are shown in Table 1 below.

[Table 1]

However, the number was measured by KS K ISO 2060: 1994, and the metal content was measured by ICP-OES (Inductively Coupled Plasma-Optical Emission Spectroscopy) after acid decomposition of the sample, and the specific resistance was applied voltage using ACL 800 MEGOHMMETER. It was measured at 10V and a temperature of 20±2℃ and a humidity of 40±2%RH, and the friction fastness was measured by KS K 0650: 2011 method.

According to the measurement results according to Table 1, the number of conductive yarns prepared by Examples 1 and 2 without performing the nicking process using a hydrochloric acid (HCL) solution, the metal content, the specific resistance, the color fastness to hydrochloric acid (HCL) solution The number of conductive yarns prepared by Comparative Examples 1 and 2 in which the nicking process was performed using, the metal weight, the specific resistance, and the friction fastness were measured almost similarly.

Therefore, it was confirmed that the conductive yarns produced by Examples 1 and 2 were equivalent in durability and conductivity to the conductive yarns produced by Comparative Examples 1 and 2.

As described above, the method for manufacturing a conductive yarn for clothing using an eco-friendly pre-treatment technology according to a preferred embodiment of the present invention uses at least two coupling agents to modify the surface of the material yarn, heat the material yarn to a constant temperature, and then natural it in the air. Despite the elimination of the nicking process using a hydrochloric acid (HCL) solution, which is harmful to the human body and the environment, by activating the cooling surface, it is possible to firmly bond the conductive material to the material yarn, thus excluding the use of hydrochloric acid (HCL) solution. Through the pre-treatment technology, it is possible to provide a high-quality conductive yarn having excellent durability and conductivity.

The above-described embodiments are merely exemplary, and those skilled in the art can variously modify various embodiments therefrom.

Therefore, the true technical protection scope of the present invention should include other embodiments variously modified as well as the above embodiments by the technical spirit of the invention described in the following claims.

S10: refining step
S20: surface modification step
S30: Surface activation step
S40: Conducting step
S50: Functional emulsion treatment step
S60: Dehydration step
S70: drying step

Claims (4)

Refining the nylon material yarn with a refining agent to remove impurities attached to the surface;
Modifying the surface so that the binding force of the conductive material is strengthened by introducing the refined material yarn into the surface modifier;
Adding the modified material yarn to a conductive additive containing the conductive material to bond the conductive material to a surface to impart conductivity;
Performing an emulsion treatment by introducing a conductive yarn in which the conductive material is bound to the surface into a functional emulsion; And
Dewatering the emulsion-treated conductive yarn; And
Drying the dehydrated conductive yarn with hot air to complete the production of the conductive yarn; Method for manufacturing a conductive yarn for clothing using an environmentally friendly pre-treatment technology comprising a. According to claim 1,
In the step of modifying the surface
The surface modifier is a method of manufacturing a conductive yarn for an apparel using an environmentally friendly pre-treatment technology characterized in that it is formed by dissolving a coupling agent, acetic acid, mercaptoethanol, isopropyl alcohol, urea and ammonium sulfate in water. According to claim 2,
The coupling agent
A method of manufacturing a conductive yarn for clothing using an eco-friendly pretreatment technology characterized by mixing at least two types of mercaptansilane, aminosilane, and epoxysilane. According to claim 1,
The conductive additive is
A method of manufacturing a conductive yarn for clothing using an environmentally friendly pre-treatment technology characterized by the composition of copper sulfate, sodium thiosulfate, sodium metabisulfite, sodium bibasic, and citric acid dissolved in water.

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